WINGs/wframe.c

   1
   2 #include "WINGsP.h"
   3
   4
   5 typedef struct W_Frame {
   6     W_Class widgetClass;
   7     W_View *view;
   8
   9     char *caption;
  10
  11     struct {
  12         WMReliefType relief:4;
  13         WMTitlePosition titlePosition:4;
  14     } flags;
  15 } Frame;
  16
  17
  18 #define DEFAULT_RELIEF  WRGroove
  19 #define DEFAULT_TITLE_POSITION  WTPAtTop
  20 #define DEFAULT_WIDTH           40
  21 #define DEFAULT_HEIGHT          40
  22
  23
  24 static void destroyFrame(Frame *fPtr);
  25 static void paintFrame(Frame *fPtr);
  26 static void repaintFrame(Frame *fPtr);
  27
  28
  29
  30 void
  31 WMSetFrameTitlePosition(WMFrame *fPtr, WMTitlePosition position)
  32 {
  33     fPtr->flags.titlePosition = position;
  34
  35     if (fPtr->view->flags.realized) {
  36         repaintFrame(fPtr);
  37     }
  38 }
  39
  40
  41 void
  42 WMSetFrameRelief(WMFrame *fPtr, WMReliefType relief)
  43 {
  44     fPtr->flags.relief = relief;
  45
  46     if (fPtr->view->flags.realized) {
  47         repaintFrame(fPtr);
  48     }
  49 }
  50
  51
  52 void
  53 WMSetFrameTitle(WMFrame *fPtr, char *title)
  54 {
  55     if (fPtr->caption)
  56         wfree(fPtr->caption);
  57
  58     if (title)
  59         fPtr->caption = wstrdup(title);
  60     else
  61         fPtr->caption = NULL;
  62
  63     if (fPtr->view->flags.realized) {
  64         repaintFrame(fPtr);
  65     }
  66 }
  67
  68
  69 static void
  70 repaintFrame(Frame *fPtr)
  71 {
  72     W_View *view = fPtr->view;
  73     W_Screen *scrPtr = view->screen;
  74
  75     XClearWindow(scrPtr->display, view->window);
  76     paintFrame(fPtr);
  77 }
  78
  79
  80 static void
  81 paintFrame(Frame *fPtr)
  82 {
  83     W_View *view = fPtr->view;
  84     W_Screen *scrPtr = view->screen;
  85     WMFont *font = scrPtr->normalFont;
  86     Display *display = scrPtr->display;
  87     int tx, ty, tw, th, tlen;
  88     int fy, fh;
  89     Bool drawTitle;
  90
  91     if (fPtr->caption!=NULL) {
  92         th = WMFontHeight(font);
  93         tlen = strlen(fPtr->caption);
  94     } else {
  95         th = 0;
  96         tlen = 0;
  97     }
  98
  99     fh = view->size.height;
 100     fy = 0;
 101
 102     switch (fPtr->flags.titlePosition) {
 103     case WTPAboveTop:
 104         ty = 0;
 105         fy = th + 4;
 106         fh = view->size.height - fy;
 107         break;
 108
 109     case WTPAtTop:
 110         ty = 0;
 111         fy = th/2;
 112         fh = view->size.height - fy;
 113         break;
 114
 115     case WTPBelowTop:
 116         ty = 4;
 117         fy = 0;
 118         fh = view->size.height;
 119         break;
 120
 121     case WTPAboveBottom:
 122         ty = view->size.height - th - 4;
 123         fy = 0;
 124         fh = view->size.height;
 125         break;
 126
 127     case WTPAtBottom:
 128         ty = view->size.height - th;
 129         fy = 0;
 130         fh = view->size.height - th/2;
 131         break;
 132
 133     case WTPBelowBottom:
 134         ty = view->size.height - th;
 135         fy = 0;
 136         fh = view->size.height - th - 4;
 137         break;
 138
 139     default:
 140         ty = 0;
 141         fy = 0;
 142         fh = view->size.height;
 143     }
 144
 145     if (tlen>0 && fPtr->flags.titlePosition!=WTPNoTitle) {
 146         tw = WMWidthOfString(font, fPtr->caption, tlen);
 147
 148         tx = (view->size.width - tw) / 2;
 149
 150         drawTitle = True;
 151     } else {
 152         tw = tx = 0;
 153         drawTitle = False;
 154     }
 155
 156     {
 157         XRectangle rect;
 158         Region region, tmp;
 159         GC gc[4];
 160         int i;
 161
 162         region = XCreateRegion();
 163
 164         rect.x = 0;
 165         rect.y = 0;
 166         rect.width = view->size.width;
 167         rect.height = view->size.height;
 168         XUnionRectWithRegion(&rect, region, region);
 169         if (drawTitle) {
 170             tmp = XCreateRegion();
 171             rect.x = tx;
 172             rect.y = ty;
 173             rect.width = tw;
 174             rect.height = th;
 175             XUnionRectWithRegion(&rect, tmp, tmp);
 176             XSubtractRegion(region, tmp, region);
 177             XDestroyRegion(tmp);
 178         }
 179         gc[0] = WMColorGC(scrPtr->black);
 180         gc[1] = WMColorGC(scrPtr->darkGray);
 181         gc[2] = WMColorGC(scrPtr->gray);
 182         gc[3] = WMColorGC(scrPtr->white);
 183
 184         for (i = 0; i < 4; i++) {
 185             XSetRegion(display, gc[i], region);
 186         }
 187         XDestroyRegion(region);
 188
 189         W_DrawReliefWithGC(scrPtr, view->window, 0, fy, view->size.width, fh,
 190                            fPtr->flags.relief, gc[0], gc[1], gc[2], gc[3]);
 191
 192         for (i = 0; i < 4; i++) {
 193             XSetClipMask(display, gc[i], None);
 194         }
 195     }
 196
 197     if (drawTitle) {
 198         /* can't draw AA text over and over again because it gets messed */
 199         /* // TODO create the dbl buffer pixmap when create/set frame title */
 200         if (scrPtr->antialiasedText) {
 201             Drawable d;
 202
 203             d = XCreatePixmap(display, view->window, tw, th, scrPtr->depth);
 204             XFillRectangle(display, d, WMColorGC(view->backColor), 0, 0, tw, th);
 205
 206             WMDrawString(scrPtr, d, scrPtr->black, font, 0, 0, fPtr->caption, tlen);
 207             XCopyArea(display, d, view->window, scrPtr->copyGC, 0, 0, tw, th, tx, ty);
 208             XFreePixmap(display, d);
 209         } else {
 210             WMDrawString(scrPtr, view->window, scrPtr->black, font, tx, ty,
 211                          fPtr->caption, tlen);
 212         }
 213     }
 214 }
 215
 216
 217
 218
 219
 220 static void
 221 handleEvents(XEvent *event, void *data)
 222 {
 223     Frame *fPtr = (Frame*)data;
 224
 225     CHECK_CLASS(data, WC_Frame);
 226
 227     switch (event->type) {
 228     case Expose:
 229         if (event->xexpose.count == 0)
 230             paintFrame(fPtr);
 231         break;
 232
 233     case DestroyNotify:
 234         destroyFrame(fPtr);
 235         break;
 236     }
 237 }
 238
 239
 240 WMFrame*
 241 WMCreateFrame(WMWidget *parent)
 242 {
 243     Frame *fPtr;
 244
 245     fPtr = wmalloc(sizeof(Frame));
 246     memset(fPtr, 0, sizeof(Frame));
 247
 248     fPtr->widgetClass = WC_Frame;
 249
 250     fPtr->view = W_CreateView(W_VIEW(parent));
 251     if (!fPtr->view) {
 252         wfree(fPtr);
 253         return NULL;
 254     }
 255     fPtr->view->self = fPtr;
 256
 257     WMCreateEventHandler(fPtr->view, ExposureMask|StructureNotifyMask,
 258                          handleEvents, fPtr);
 259
 260
 261     fPtr->flags.relief = DEFAULT_RELIEF;
 262     fPtr->flags.titlePosition = DEFAULT_TITLE_POSITION;
 263
 264     WMResizeWidget(fPtr, DEFAULT_WIDTH, DEFAULT_HEIGHT);
 265
 266     return fPtr;
 267 }
 268
 269
 270 static void
 271 destroyFrame(Frame *fPtr)
 272 {
 273     if (fPtr->caption)
 274         wfree(fPtr->caption);
 275
 276     wfree(fPtr);
 277 }